EP0108376B1 - Verfahren zum ortsgenauen Nachgravieren von Druckzylindern - Google Patents

Verfahren zum ortsgenauen Nachgravieren von Druckzylindern Download PDF

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Publication number
EP0108376B1
EP0108376B1 EP83110892A EP83110892A EP0108376B1 EP 0108376 B1 EP0108376 B1 EP 0108376B1 EP 83110892 A EP83110892 A EP 83110892A EP 83110892 A EP83110892 A EP 83110892A EP 0108376 B1 EP0108376 B1 EP 0108376B1
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EP
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Prior art keywords
engraving
engraved
cylinder
track
small pits
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP83110892A
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German (de)
English (en)
French (fr)
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EP0108376A3 (en
EP0108376A2 (de
Inventor
Siegfried Beisswenger
Wolfgang Boppel
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Dr Ing Rudolf Hell GmbH
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Dr Ing Rudolf Hell GmbH
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Priority to AT83110892T priority Critical patent/ATE54272T1/de
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Publication of EP0108376A3 publication Critical patent/EP0108376A3/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/02—Engraving; Heads therefor
    • B41C1/04—Engraving; Heads therefor using heads controlled by an electric information signal
    • B41C1/05—Heat-generating engraving heads, e.g. laser beam, electron beam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B7/00—Machines, apparatus or hand tools for branding, e.g. using radiant energy such as laser beams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/047—Detection, control or error compensation of scanning velocity or position
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/06—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using cylindrical picture-bearing surfaces, i.e. scanning a main-scanning line substantially perpendicular to the axis and lying in a curved cylindrical surface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/024—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted
    • H04N2201/02406—Arrangements for positioning elements within a head
    • H04N2201/02439—Positioning method
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/024—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted
    • H04N2201/028—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted for picture information pick-up
    • H04N2201/03—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted for picture information pick-up deleted
    • H04N2201/031—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted for picture information pick-up deleted deleted
    • H04N2201/03104—Integral pick-up heads, i.e. self-contained heads whose basic elements are a light source, a lens and a photodetector supported by a single-piece frame
    • H04N2201/03108—Components of integral heads
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/024—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted
    • H04N2201/028—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted for picture information pick-up
    • H04N2201/03—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted for picture information pick-up deleted
    • H04N2201/031—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted for picture information pick-up deleted deleted
    • H04N2201/03104—Integral pick-up heads, i.e. self-contained heads whose basic elements are a light source, a lens and a photodetector supported by a single-piece frame
    • H04N2201/0315—Details of integral heads not otherwise provided for
    • H04N2201/03158—Heat radiator
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04—Scanning arrangements
    • H04N2201/047—Detection, control or error compensation of scanning velocity or position
    • H04N2201/04701—Detection of scanning velocity or position
    • H04N2201/0471—Detection of scanning velocity or position using dedicated detectors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04—Scanning arrangements
    • H04N2201/047—Detection, control or error compensation of scanning velocity or position
    • H04N2201/04701—Detection of scanning velocity or position
    • H04N2201/04715—Detection of scanning velocity or position by detecting marks or the like, e.g. slits
    • H04N2201/04724—Detection of scanning velocity or position by detecting marks or the like, e.g. slits on a separate encoder wheel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04—Scanning arrangements
    • H04N2201/047—Detection, control or error compensation of scanning velocity or position
    • H04N2201/04701—Detection of scanning velocity or position
    • H04N2201/04729—Detection of scanning velocity or position in the main-scan direction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04—Scanning arrangements
    • H04N2201/047—Detection, control or error compensation of scanning velocity or position
    • H04N2201/04701—Detection of scanning velocity or position
    • H04N2201/04734—Detecting at frequent intervals, e.g. once per line for sub-scan control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04—Scanning arrangements
    • H04N2201/047—Detection, control or error compensation of scanning velocity or position
    • H04N2201/04753—Control or error compensation of scanning position or velocity
    • H04N2201/04756—Control or error compensation of scanning position or velocity by controlling the position or movement of the sheet, the sheet support or the photoconductive surface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04—Scanning arrangements
    • H04N2201/047—Detection, control or error compensation of scanning velocity or position
    • H04N2201/04753—Control or error compensation of scanning position or velocity
    • H04N2201/04758—Control or error compensation of scanning position or velocity by controlling the position of the scanned image area
    • H04N2201/04767—Control or error compensation of scanning position or velocity by controlling the position of the scanned image area by controlling the timing of the signals, e.g. by controlling the frequency o phase of the pixel clock
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04—Scanning arrangements
    • H04N2201/047—Detection, control or error compensation of scanning velocity or position
    • H04N2201/04753—Control or error compensation of scanning position or velocity
    • H04N2201/04789—Control or error compensation of scanning position or velocity in the main-scan direction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04—Scanning arrangements
    • H04N2201/047—Detection, control or error compensation of scanning velocity or position
    • H04N2201/04753—Control or error compensation of scanning position or velocity
    • H04N2201/04791—Control or error compensation of scanning position or velocity in the sub-scan direction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04—Scanning arrangements
    • H04N2201/047—Detection, control or error compensation of scanning velocity or position
    • H04N2201/04753—Control or error compensation of scanning position or velocity
    • H04N2201/04794—Varying the control or compensation during the scan, e.g. using continuous feedback or from line to line

Definitions

  • the present invention relates to a method and a device for carrying out the method for precise engraving of printing cylinders according to the preamble of claims 1 and 2.
  • solutions for electromechanical engraving have been specified in such a way that by means of fixed reference marks arranged on the scanning and engraving cylinders, one of which is often referred to as the north pulse, since it occurs only once on the circumference of the printing cylinder, the Angular misalignment between the scanning and engraving cylinder is measured and pulses are hidden or inserted by the voltage of the drive motor for the engraving cylinder until the angular misalignment becomes zero.
  • a grid disk connected to the printing cylinder is scanned photoelectrically, and a circumferential pulse, also called a north pulse, is generated with each revolution of the cylinder.
  • the grid disc delivers a large number of pulses with which the engraving cycle is generated and synchronized by means of a PLL circuit.
  • DE-A-23 54 732 describes the preparation of printing surfaces for the engraving of gravure cylinders.
  • the printing cylinders are subjected to a pre-engraving before they are engraved with the image information, in which the entire printing cylinder is provided with cups of the same depth, which are then filled with plastic.
  • this cylinder is clamped in a laser engraving machine, and the laser burns out a certain amount of plastic from the cups filled with plastic, which creates cups in the plastic, which then take up the desired amount of color for printing.
  • a so-called cell detector which detects the presence of a filled cell at a scanned point on the printing form surface.
  • a beam guiding device is provided which, with the aid of the cell detector, adjusts the beam so that it falls on the cell to be engraved which is detected by the detector.
  • the exact start of engraving is determined by means of a precisely defined gap within these cells.
  • the definition of the start of engraving or recovery of the start of engraving has the result that when the printing cylinder rotates at a constant speed, the data stream to the engraving system is switched on at the same point in both the first and the second engraving, i.e. that the start of engraving is the same in both cases.
  • the present invention is therefore based on the object of specifying a method by means of which it is possible, regardless of the scanning process, to start the engraving process at a predetermined location on the surface of the engraving cylinder during post-engraving.
  • a device for performing the method is specified in claim 2.
  • Figure 1 shows in section a device for electron beam engraving of printing cylinders, which consists of a vacuum vessel (1) in which there is a printing cylinder (2) which is rotated in the direction of the arrow (3) with the angular velocity w by a drive, not shown.
  • Engraving machines are known in practice in which the relative axial movement between the impression cylinder and the engraving system is achieved either by axially displacing the impression cylinder or the engraving system.
  • the present invention can advantageously be applied to both types of drive.
  • the electron-optical structure of the electron beam generator 4 has been omitted and only the focus coil 6 has been drawn in, with the aid of which the electron beam is focused on the printing form surface.
  • the engraving cups are created by focusing and defocusing.
  • the control of the focus coil (6) takes place according to DE ⁇ A ⁇ 2947 444 (corresponds to US ⁇ A ⁇ 4,393,295), which is why the engraving control is not explained in detail here, since in the present case it is only a question of generating the pulses with which the Engraving in the axial and circumferential directions is started.
  • the electron beam generator is switched to measuring mode before the actual engraving, which will be explained in more detail later.
  • Secondary electrons SE and reflected electrons RE emanating from the printing form surface reach an annular diaphragm (7) which is connected to ground via a measuring resistor R m .
  • the sensor signal supplied by the diaphragm (7) is fed to a maximum detector (8), from which it is fed to the stepper motor controller (10) after an analog / digital conversion in an A / D converter (9).
  • a single-phase electronics (11) which is connected on the one hand via a brand detector (12) to the diaphragm (7) and on the other hand from a grid disc (21), which rotates synchronously with the pressure cylinder (2), from a stationary one Brand (22), so-called Nordimpulse N jo receives.
  • the single-phase electronics (11) is connected to a stage (23) for clock generation, which supplies the frequencies for the engraving control (24).
  • the single-phase electronics is connected to a central control computer (13) and supplies the pulses required for the phase-in at its output.
  • FIG. 1a shows in principle the same structure as Figure 1, but the circuit is divided more precisely into its individual components.
  • the stepper motor control (10) of FIG. 1 consists of a stepper motor control computer (10a), for example of the type i SBC 80/24 from Intel with 80 programmable ones Input / output lines and a stepper motor power stage (10b), type CD 30 from Phytron, Kunststoff.
  • the stepper motor type ZSH 125-200-15 from Phytron, Kunststoff, can be used as the stepper motor (10c).
  • the stepper motor power stage (10b) is connected to the motor control computer (10a) via a clock line ⁇ , a forward / reverse control line and a status line.
  • the engine control computer (10a) is connected to the A / D converter (9) via a data line (91), which can be a 12-way line, for example, and via a control line (92).
  • the measuring resistor R m of FIG. 1 is designed in FIG. 1a as a current / voltage converter (14), which is described in more detail later in FIG.
  • a data bus 15
  • Intel Multi Bus IEEE 796 connected to the stepper motor control computer (10a).
  • Figure 2 shows a well trace, as used e.g. is applied to the cylinder edge at the beginning of the engraving.
  • This cell track can also lie on a circumferential line that is not engraved on the edge of the printing form, but next to the printing form or at a location on the printing form where it does not interfere with the image content or the printing.
  • a still unengraved cylinder is provided with a well pattern in which some wells are missing before the north impulse. This defines the location of the start of engraving in the feed and circumferential directions of the cylinder.
  • the electron beam is operated as a measuring probe for the phasing, ie it is operated at a lower intensity than its intensity during material processing. Its diameter is reduced in relation to the diameter of the wells as much as the positioning accuracy during the phase-in (resolution of the well by the electron beam) requires.
  • the beam spot is set to 5 pm diameter and the power density to 10 4 watt / cm z .
  • FIG. 4 shows the course of the signal at the output of the current / voltage converter (14) in the upper part. It can be seen that a symmetrical signal with two approximately equal maxima is generated for each well. The symmetry of this signal results on the one hand from the fact that the well is also symmetrical and, on the other hand, from the fact that the measuring diaphragm (7) surrounds the electron beam (5) symmetrically. It follows from this that the electron beam probe on the walls of the well generates an identical signal when the well enters the beam and exits the beam.
  • This double signal is evaluated with the aid of a comparator described later in FIG. 12, and the signal shown in FIG. 4 as a square-wave signal is obtained, which is evaluated in the circumferential direction for the single-phase process, as will be explained later.
  • FIG. 5a 3 scanning tracks are represented by a well and in FIG. 5b the signal curve for three scanning tracks is shown in the event that the axial zero position of the cylinder is to be determined.
  • the signal profiles (1 '), (2') and (3 ') in FIG. 5b result for the three tracks, which are evaluated by means of the maximum detector (8) in FIG.
  • the maximum signal is in the second track, i.e. in the central area of the well, which is also confirmed by the curve (2 ').
  • the counter reading is sought at which the measured value at the output of the current / voltage converter (14) gives a maximum.
  • the diaphragm (7) supplies a signal whose rising and falling flank corresponds to the edge of the cup of the engraving cup.
  • FIG. 6 shows the well trace with a gap before the north impulse N Jo .
  • the number of PLL clocks output by the clock generator is counted once from the north pulse N jo of the grid disc to the rising pulse edge of the first well appearing after the gap and on the other hand from the north pulse N jo of the grid disc to the falling edge of the measurement signal, which in Figure 7 is shown in more detail.
  • the number of pulses to the rising edge is Z1 and the number of pulses to the falling edge is z 2 , where z 2 > z.
  • This impulse ie the corresponding counter reading, is saved and serves as a new reference for post-engraving in the circumferential direction.
  • the generation of this pulse by means of the individual circuit components is shown in more detail in FIG. 10a, and FIG. 10a is explained in more detail in the course of the description of FIGS. 8-11.
  • Figure 8 shows the current / voltage converter (14) of Figure 1 a in detail.
  • the measuring current of the diaphragm (7) in FIGS. 1 and 1a reaches two integrated circuits IC and IC 2 which are connected in series and are connected in accordance with FIG.
  • Type ADLH 32 is preferably used for the IC 1 circuits and Type ADLH 33 from Analog Devices for the IC 2 circuit. The function of this circuit is explained in more detail below.
  • the actual measuring resistor R M lies in the feedback branch between the output and input of the series circuit comprising IC 1 and IC 2 .
  • IC 1 and IC 2 work in a known manner as current / voltage converters with a very low input resistance. This results in a smaller time constant compared to the measuring circuit shown in FIG. 1.
  • stage IC 2 The output of stage IC 2 is connected to the mark detector (12) and the maximum detector (8) of FIGS. 1 and 1a and supplies an output voltage U 1 as shown in FIG. 10a.
  • the circuit of the maximum detector (8) is shown in more detail in FIG.
  • the voltage U 1 is amplified and rectified in a first amplifier IC 3 .
  • the diodes D 1 and D 2 are located in the feedback branch of IC 3 , the diode D 1 with the feedback resistor R K3 in series and diode D 2 via the series connection of the feedback resistor R K3 and D 1 in the reverse direction.
  • the rectified voltage is at the input of an integrator and holding stage, consisting of the commercially available electronic components IC 4 and IC 5 .
  • the integration result is given to an A / D converter IC 6 , which can also be designed as an integrated circuit.
  • the circuit in FIG. 9 can be constructed from commercially available components, for example for the IC 3 module the ADLH 32 type from Analog Devices, for the IC 4 module the DG 300 type from Silonix and for the IC module 5 the type OP 16 from PMI and for module IC 6 type AD 574 from Analog Devices can be used.
  • the integration stage IC4 has control outputs SL 1 and SL 2 , which can be used to select the functions integrate, integrate, hold and reset. These lines are connected to the stepper motor control computer (10a) for the stepper motor.
  • the functions integrate, hold and reset are selected with the help of the MOS switch IC 4 , which is done according to the following truth table.
  • Figure 10 shows the brand detector (12) of Figures 1 and 1a.
  • the output signal of the current / voltage converter (14), which is described in detail in FIG. 8, arrives as an input signal U 1 at a rectifier stage IC 7 , which is constructed like the rectifier stage IC 3 of FIG. 9.
  • the rectified output signal U 2 of this stage is compared with a reference voltage U Ref in a comparator IC 8 in order to obtain a digital output signal U 3 .
  • the signals U 1 , U 2 , U Ref and U 3 are shown in Figure 10a.
  • the digital output signal U 3 is applied to a delay stage IC 11 , the output signal of which is designated U 4 in FIG. 10 a.
  • the signal U 3 is fed to a retriggerable monoflop IC 9 , the output signal U 5 (FIG. 10a) of which corresponds to the gap.
  • the signal U 5 is fed to another monoflop IC 10 , the time constant of which corresponds to a well cycle.
  • This output signal U 6 (FIG. 10a) is given together with the output signal U 4 of the delay stage to an AND gate T 1 , at the output of which a signal U 7 appears which appears to the first well after the gap in the reference track (FIG.
  • the signal U 7 reaches a monoflop IC 12 via a delay compensation element T 2 and, on the other hand, an additional monoflop IC 13 via an inverter T 3 .
  • the two monoflops IC 12 and IC 13 generate two needle pulses belonging to the flanks Z 1 and Z 2 of FIG. 7, which are designated by mark 1 and mark 2 and are shown in FIG. 10a as U 9 and U 11 .
  • FIG. 11 shows a circuit arrangement with the aid of which the north pulse N j shifted with respect to the north pulse N jo of the grid disc (FIG. 2 or FIG. 3) is generated.
  • the counter readings Z 1 and Z 2 are first obtained, on the one hand the number of PLL cycles between N jo of the raster disk and mark 1 and on the other hand the number of PLL cycles between the north pulse N jo and the Correspond to brand 2.
  • a loadable 24-bit counter IC 18 is provided, which is connected to three 8-bit D-bit registers IC 15 to IC 17 and to three 8-bit D latches.
  • the registers IC 15 to IC 17 can be selected one after the other by the control computer (13a) by means of the control lines C and C 2 and loaded via the data output and the registers IC 19 to IC 2 can be read out.
  • the counter readings Z 1 and Z 2 are obtained with the aid of marks 1 and 2 and the counter IC 18 and the two register groups IC 18 to IC 17 and IC 19 to IC 21 .
  • the counter reading Z is obtained by setting a control line C 3 , which is connected to the central computer (13) and the gates T 7 , T 8 and T 12 , to L.
  • the control line C 4 is L and the control line C 5 is H.
  • the registers IC 15 to IC 17 are set to zero via a gate T 7 and after a delay time determined by a delay element T 6 the contents of registers IC 15 to IC 17 are transferred to counter IC 18 , ie IC 18 is set to zero with every north pulse.
  • the counter IC 18 is switched to count up and counted up by the PLL clocks.
  • the contents of the counter IC 18 are transferred to the registers IC 19 to IC 2 and read into the central computer (13) as the counter reading Z 1 after a delay time which is determined by the monoflop IC 21 .
  • the counter reading Z2 is obtained with the aid of the mark 2 by setting the control line C4 to H and the control line C 5 to L.
  • the mean value Z is calculated in the computer.
  • the control line C3 is then set to H by the computer (13). This means that the registers IC 15 to IC 17 are no longer set to zero with every north pulse, but rather that the value once written is retained and this value is transferred to the counter IC 18 with every north pulse.
  • the mean value Z is also loaded by the computer (13) into the registers IC 15 to IC 17 .
  • the central control computer (13) is connected to the stepper motor control computer (10a) via an Intel multi-bus IEEE 796.
  • the specification of this bus is in the manual, Intel, OE-Systems handbook 1983, order No. 210941-001, pages 3-1 to 3-10, so that this description is not repeated here, since the bus can be taken over without modifications.
  • the central control computer (13) serves as a master computer in the computer control; the stepper motor computer (10a) works as a slave computer. The data is transferred between the master and slave using the familiar hand-shake procedure.
  • the engine control computer (10a) receives command codes and parameters from the central control computer (13), e.g. "Drive the stepper motor in the target position", where "Drive the stepper motor” is a command and "target position" is the associated parameter.
  • the stepper motor computer (10a) gives a "status message”, e.g. "Target position reached” to the central control computer (13).
  • control computer (13) The program sequence of the control computer (13) is shown in more detail in the form of a flow chart in FIG. Since such a computer is not only used to control the single-phase electronics according to the invention, but also other control tasks, e.g. Control of the electron beam gun or of the entire system, is only described here the program segments that are important for the implementation of the invention, namely the program segments: "Command to stepper motor control 10a".
  • the stepper motor receives a pulse from the motor control computer (10a) for the execution of a single step, which e.g. leads to the second track of Figure 5a.
  • the same command step sequence as for the first track is carried out for this track and the corresponding measured value is stored in a further computer register called Data-N.
  • the two stored measured values are compared with one another. If the content of the register Data-N is smaller than the content of the register Data-N-1, the above-described process is repeated until the content of the register Data-N is smaller than the content of the register Data-N-1. Then a status message, i.e.
  • this counter reading of the stepper motor is the reference value for the axial feed for the subsequent engraving.
  • FIG. 16 shows the subroutine "circumferential phases" of the control computer (13). This program sequence has already been dealt with in the description of FIG. 11 and is only given here in successive individual steps for the sake of a better overview.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Manufacturing & Machinery (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
EP83110892A 1982-11-04 1983-11-02 Verfahren zum ortsgenauen Nachgravieren von Druckzylindern Expired - Lifetime EP0108376B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83110892T ATE54272T1 (de) 1982-11-04 1983-11-02 Verfahren zum ortsgenauen nachgravieren von druckzylindern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823240654 DE3240654A1 (de) 1982-11-04 1982-11-04 Verfahren zum ortsgeneuen nachgravieren von druckzylindern
DE3240654 1982-11-04

Publications (3)

Publication Number Publication Date
EP0108376A2 EP0108376A2 (de) 1984-05-16
EP0108376A3 EP0108376A3 (en) 1987-04-01
EP0108376B1 true EP0108376B1 (de) 1990-07-04

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ID=6177237

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EP83110892A Expired - Lifetime EP0108376B1 (de) 1982-11-04 1983-11-02 Verfahren zum ortsgenauen Nachgravieren von Druckzylindern

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Country Link
US (1) US4546232A (ja)
EP (1) EP0108376B1 (ja)
JP (1) JPS5998847A (ja)
AT (1) ATE54272T1 (ja)
DE (2) DE3240654A1 (ja)
SU (1) SU1313337A3 (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4038183A1 (de) * 1990-11-30 1992-06-04 Hell Ag Linotype Verfahren und vorrichtung zur ausrichtung eines elektronenstrahls relativ zu einem bezugsobjekt
DE19710005A1 (de) * 1997-03-12 1998-09-17 Heidelberger Druckmasch Ag Verfahren und Einrichtung zur Gravur von Druckzylindern
DE10012520A1 (de) * 2000-03-15 2001-09-20 Heidelberger Druckmasch Ag Verfahren zur Herstellung von Druckzylindern

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS616701A (ja) * 1984-06-21 1986-01-13 Iwatsu Electric Co Ltd 製版機の瀬御誤差調整方法
DE3718177A1 (de) * 1987-05-29 1988-12-15 Leybold Ag Einrichtung fuer elektronenstrahlfokussierung, insbesondere beim elektronenstrahlschweissen
DE4102984A1 (de) * 1990-09-28 1992-04-02 Linotype Ag Oberflaechenstruktur einer walze sowie verfahren und vorrichtung zur erzeugung der oberflaechenstruktur
DE4102983A1 (de) * 1990-09-28 1992-04-02 Linotype Ag Oberflaechenstruktur einer walze sowie verfahren und vorrichtung zur erzeugung der oberflaechenstruktur
DE4031547A1 (de) * 1990-10-05 1992-04-09 Hell Rudolf Dr Ing Gmbh Verfahren und vorrichtung zur herstellung von texturwalzen
DE4031546A1 (de) * 1990-10-05 1992-04-09 Hell Rudolf Dr Ing Gmbh Verfahren und vorrichtung zur herstellung einer texturwalze
DE4032918C2 (de) * 1990-10-17 2000-06-29 Heidelberger Druckmasch Ag Vorrichtung zur Beaufschlagung eines Materials mit einem Elektronenstrahl
DE4040201C2 (de) * 1990-12-15 1994-11-24 Hell Ag Linotype Verfahren zum wartungsarmen Betrieb einer Vorrichtung zur Herstellung einer Oberflächenstruktur und Vorrichtung zur Durchführung des Verfahrens
JP5121744B2 (ja) * 2008-03-07 2013-01-16 富士フイルム株式会社 製版装置及び製版方法
DE102012000650A1 (de) 2012-01-16 2013-07-18 Carl Zeiss Microscopy Gmbh Verfahren und vorrichtung zum abrastern einer oberfläche eines objekts mit einem teilchenstrahl
DE102012010707A1 (de) * 2012-05-30 2013-12-05 Carl Zeiss Microscopy Gmbh Verfahren und vorrichtung zum abrastern einer oberfläche einesobjekts mit einem teilchenstrahl

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Publication number Priority date Publication date Assignee Title
US3404254A (en) * 1965-02-26 1968-10-01 Minnesota Mining & Mfg Method and apparatus for engraving a generally cross-sectionally circular shaped body by a corpuscular beam
GB1410344A (en) * 1972-11-01 1975-10-15 Crosfield Electronics Ltd Preparation of printing surfaces
DE2513042C3 (de) * 1975-03-25 1981-07-30 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Verfahren zum ortsgenauen Einstellen des Beginns und Endes der Reproduktion
DE2705993C2 (de) * 1977-02-12 1982-11-25 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Verfahren zum ortsgenauen Einstellen des Beginns der Abtastung bzw. Aufzeichnung einer Vorlage bei der elektronischen Druckformherstellung
US4216378A (en) * 1978-10-10 1980-08-05 The Mead Corporation Optical scanner
DE2947444C2 (de) * 1979-11-24 1983-12-08 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Elektronenstrahl-Gravierverfahren
US4621285A (en) * 1980-12-10 1986-11-04 Jerrold Division, General Instrument Corporation Protected television signal distribution system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4038183A1 (de) * 1990-11-30 1992-06-04 Hell Ag Linotype Verfahren und vorrichtung zur ausrichtung eines elektronenstrahls relativ zu einem bezugsobjekt
DE19710005A1 (de) * 1997-03-12 1998-09-17 Heidelberger Druckmasch Ag Verfahren und Einrichtung zur Gravur von Druckzylindern
DE10012520A1 (de) * 2000-03-15 2001-09-20 Heidelberger Druckmasch Ag Verfahren zur Herstellung von Druckzylindern

Also Published As

Publication number Publication date
EP0108376A3 (en) 1987-04-01
JPS5998847A (ja) 1984-06-07
ATE54272T1 (de) 1990-07-15
DE3381707D1 (de) 1990-08-09
US4546232A (en) 1985-10-08
EP0108376A2 (de) 1984-05-16
SU1313337A3 (ru) 1987-05-23
JPH0450908B2 (ja) 1992-08-17
DE3240654A1 (de) 1984-05-10

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